Petrofac QA QC Engineer Interview Questions and Answers

Q1. What is an electrical panel?
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Q2. What are the best practices for electrical motor maintenance?
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Q3. Capacitor bank maintenance
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Q4. Grids maintenance
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Q5. Electrical panel diagrams
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Q1. Technical questions
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Q1. Interview questions
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Q1. Hydrotest test pack contains 3 main things what are they?
Ans. 
The three main things in a hydrotest test pack are pressure gauges, test pumps, and test plugs.
• Pressure gauges are used to measure the pressure during the hydrotest.

• Test pumps are used to generate the required pressure for the test.

• Test plugs are used to seal off the openings in the system being tested.
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Q2. Cement coating standards on the cross country pipeline?
Ans. 
Cement coating standards ensure the quality and durability of cross country pipelines.
• Cement coating standards specify the thickness and composition of the coating.

• Standards also define the application and curing processes for the coating.

• Coating standards ensure protection against corrosion and mechanical damage.

• Examples of cement coating standards include API RP 5L2 and ISO 21809-1.
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Q1. Working principle of elecotromagnetic flowmeter
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Electromagnetic flowmeter measures flow rate by using Faraday's law of electromagnetic induction.
• Electromagnetic flowmeter is based on the principle of Faraday's law of electromagnetic induction.

• It consists of a flow tube, electrodes, and a magnetic field.

• When a conductive fluid flows through the flow tube, it generates a voltage proportional to the flow rate.

• The electrodes detect the voltage and the magnetic field ens...read more
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Q1. Difference between interacting and non interacting system
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Interacting systems have feedback loops and can influence each other's behavior, while non-interacting systems operate independently.
• Interacting systems have mutual dependencies and can affect each other's inputs, outputs, or behavior.

• Non-interacting systems operate independently and do not have any influence on each other.

• Interacting systems often involve feedback loops where the output of one system affects the input...read more
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Q1. Questions on Field Instruments
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Q2. Questions based on your resume
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Q1. Why this company?
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Q2. How does this job fit your qualifications and skills?
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Q3. Describe the toughest challenge you have in your life.
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Q4. A piece you have prepared, talk about it.
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Q5. Mention a situation with a bad member in your group
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Q1. What type of level instrument can you use in certain applications
Ans. 
Different types of level instruments can be used in different applications depending on the requirements.
• For continuous level measurement, ultrasonic level sensors can be used.

• For point level detection, capacitance level switches can be used.

• For high-temperature applications, guided wave radar level sensors can be used.

• For corrosive or aggressive liquids, magnetic level gauges can be used.

• For level measurement in open
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Q2. Competency questions
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